package lab03.test09;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

public class Test09 {
    public static void main(String[] args) {
        //txt文件内容->List
        //单步调试
        //断点    F8  在左边单击，出现一个红点，点bug,再按F8就可以一行一行的看
        /*
        错误：
        1.编译错误：会飘红
        2.运行时错误：运行时下面会出错
         */
        List<Book> books=new ArrayList<Book>();
        String path="D:\\book.txt";
        String path1="D:\\book1.txt";
        BufferedReader reader=null;
        BufferedWriter writer=null;
        try {
            reader=new BufferedReader(new FileReader(path));

            String line=null;

            while ((line=reader.readLine())!=null){
                String[] tokens=line.split("\t");

                Book book=new Book();
                book.bookNo=Integer.parseInt(tokens[0]);
                book.bookName=tokens[1];
                book.version=tokens[2];
                book.price=Double.parseDouble(tokens[3]);
                book.sales=Double.parseDouble(tokens[4]);
                books.add(book);
            }
            int i=1;
            for (Book b:books){
                if (i==3){
                    b.price=b.price+20; }
                if (i==4){
                    b.price=b.price+30;
                }
                i++;
            }
            writer=new BufferedWriter(new FileWriter(path1));
            for (Book b:books){
                writer.write(b.bookNo+" "
                        +b.bookName+"  "
                        +b.version+"   "
                        +b.price+" "
                        +b.sales);
                writer.newLine();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
                reader.close();
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}
